Classical Gravitational Dynamics from Quantum Field Theory

by Zhengwen Liu (Southeast University)

Wednesday 2 Apr 2025, 11:00 → 13:00 Asia/Shanghai

摘要：High-precision theoretical predictions for the motion of compact binary systems are essential for maximizing the discovery potential of current and future gravitational-wave observations, such as LIGO-Virgo-Kagra, Taiji, TianQin, and Einstein Telescope. The Quantum Field Theory (QFT) methodology, including modern Effective Field Theory and multi-loop techniques, has proven exceptionally powerful for analytically solving the classical two-body problem. This talk explores recent advancements in modern QFT technology and its application in computing gravitational two-body dynamics in the post-Minkowskian approximation.

个人简介：刘正文，2019年于比利时鲁汶大学获科学博士学位。2019至2022年，在德国同步辐射电子加速器中心(DESY)从事博士后研究工作；2022年秋，加入玻尔国际研究院/玻尔研究所，任助理教授。2024年4月，回国入职东南大学，现任丘成桐中心与物理学院教授。研究兴趣主要包括微扰量子场论、散射振幅、有效场论，及其在基本相互作用物理的应用。